The test report of finding out concentration of all elements with respect to chemical additives for dust suppression should conform to the limits prescribed in which Act?

A. sanitation services B. recreational services C. welfare services D. occupational health services

A. put props as required at the place B. set roof bolts at 3 × 3 mesh C. place shall be temporarily supported followed by permanent supports D. place shall be supported permanent supports before engaging persons to work

A. project with largest negative value B. project with largest positive value C. project with good cash flow D. project with cumulative cash flow with negative and positive number

A. 3 + 0.25% B. 5 + 0.25% C. 7 + 0.25% D. 9 + 0.25%